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<div><a href="../../index.html">Home</a> &gt;  <a href="#">imael</a> &gt; <a href="#">geom2d</a> &gt; isPerpendicular.m</div>

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<h1>isPerpendicular
</h1>

<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>ISPERPENDICULAR  check orthogonality of two vectors</strong></div>

<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>function b = isPerpendicular(v1, v2, varargin) </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre class="comment">ISPERPENDICULAR  check orthogonality of two vectors

   B = isPerpendicular(V1, V2)
   where V1 and V2 are 2 [1x3] arrays, returns 1 if the vectors are
   parallels, and 0 otherwise.

   Also works when V1 and V2 are two [Nx3] arrays with same number of
   rows. In this case, return a [Nx1] array containing 1 at the positions
   of parallel vectors.

   Also works when one of V1 or V2 is scalar and the other one is [Nx3]
   array, in this case return [Nx1] results.

   B = isPerpendicular(V1, V2, ACCURACY)
   specifies accuracy of numerical tests, default is 1e-14.


   Example
   isPerpendicular([1 2 1], [2 4 2])
   % returns 1
   isPerpendicular([1 2 1], [1 3 2])
   % returns 0

   See also
   <a href="vectors2d.html" class="code" title="function vectors2d">vectors2d</a>, <a href="isParallel.html" class="code" title="function b = isParallel(v1, v2, varargin)">isParallel</a>, <a href="lines2d.html" class="code" title="function lines2d(varargin)">lines2d</a>


 ------
 Author: David Legland
 e-mail: david.legland@jouy.inra.fr
 Created: 2006-04-25
 Copyright 2006 INRA - CEPIA Nantes - MIAJ (Jouy-en-Josas).</pre></div>

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<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
This function calls:
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This function is called by:
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